/*
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 * and open the template in the editor.
 */

package action;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author gjun
 */
public class CheckServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String user = request.getParameter("user");
        String paswd = request.getParameter("paswd");
        HashMap database=new HashMap();
        database.put("tom" , "1234");
        database.put("mary" , "4567");
        database.put("john" , "9870");
        String tmppaswd = (String)database.get(user);
        String mes = "";
        if(tmppaswd==null){
            mes= "帳號不存在";
            request.setAttribute("mes", mes);
            RequestDispatcher rd =request.getRequestDispatcher("login.jsp");
            rd.forward(request, response);
            return;
        }else if(!tmppaswd.equals(paswd)){
            mes= "密碼錯誤";
            request.setAttribute("mes", mes);
            RequestDispatcher rd =request.getRequestDispatcher("login.jsp");
            rd.forward(request, response);
            return;
        }else{
            mes= "帳號密碼正確";
            response.sendRedirect("http://www.hinet.net");
        }
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet CheckServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet CheckServlet at " + request.getContextPath() + "</h1>");
            out.println(mes +"<br>");
            out.println("user:"+user +"<br>");
            out.println("paswd:"+paswd);
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
